[hyperpallium2]

There's the story of Jobs throwing a prototype iphone in an aquarium, for bubbles to reveal excess space. They'd be nervous wasting 0.2 cm^3.

[sudosysgen]

Well, there is certainly is around 0.2cm^3 of dead space in say an iPhone 11. The iPhone 7 had enough dead space in it to install an entire dongle inside.